diff options
| -rw-r--r-- | kernel/trace/trace_events.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index 578f1f7d49a6..3ecc41f6acd9 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -2420,14 +2420,15 @@ event_create_dir(struct dentry *parent, struct trace_event_file *file) /* * If the trace point header did not define TRACE_SYSTEM - * then the system would be called "TRACE_SYSTEM". + * then the system would be called "TRACE_SYSTEM". This should + * never happen. */ - if (strcmp(call->class->system, TRACE_SYSTEM) != 0) { - d_events = event_subsystem_dir(tr, call->class->system, file, parent); - if (!d_events) - return -ENOMEM; - } else - d_events = parent; + if (WARN_ON_ONCE(strcmp(call->class->system, TRACE_SYSTEM) == 0)) + return -ENODEV; + + d_events = event_subsystem_dir(tr, call->class->system, file, parent); + if (!d_events) + return -ENOMEM; name = trace_event_name(call); file->dir = tracefs_create_dir(name, d_events); |